         (catch Exception e
           (println "Figwheel: there was a problem running the open file command - "
                    command)
-          (println (.getMessage e)))))))
+          (println (.getMessage e))))
+      (println "Figwheel: Can't open " (pr-str (vals (select-keys msg [:file-name :file-line :file-column]))) 
+               "No :open-file-command supplied in the config."))))
 
 ;; should make this extendable with multi-method
 (defn handle-client-msg [{:keys [browser-callbacks log-writer] :as server-state} data]


(defn exec-open-file-command [{:keys [open-file-command] :as server-state} msg]
  (when-let [msg (#'validate-file-selected-msg msg)]
    (let [command (get-open-file-command open-file-command msg)]
      (try
        (let [result (apply shell/sh command)]
          (if (zero? (:exit result))

  (-send-message [this channel-id msg-data callback])
  (-connection-data [this])
  (-actual [this]))

(defn get-open-file-command [open-file-command {:keys [file-name file-line file-column]}]
  (when open-file-command
